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P23D4
Cylinder 1 Fuel Heater Performance
Generic · engine
Data confidence
65%
The control module judged the Cylinder 1 Fuel Heater behaviour implausible for the current operating conditions.
TuningBot DTC Database · v4.37.14
P23D4 Cylinder 1 Fuel Heater Performance
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P23D4 means
Related and nearby codes
How to read P23D4
P
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
3D4
Specific fault index within the subsystem.
Frequently asked questions about P23D4
What does P23D4 mean?
Cylinder 1 Fuel Heater Performance. The control module judged the Cylinder 1 Fuel Heater behaviour implausible for the current operating conditions.
Is P23D4 generic or manufacturer-specific?
P23D4 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P23D4 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic